Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:38:15 2012 Optimize a model with 77 rows, 65 columns and 255 nonzeros Presolve removed 0 rows and 1 columns Presolve time: 0.00s Presolved: 77 rows, 64 columns, 254 nonzeros Variable types: 0 continuous, 64 integer (63 binary) Found heuristic solution: objective 13.0000000 Root relaxation: objective 0.000000e+00, 34 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 25 13.00000 0.00000 100% - 0s H 0 0 8.0000000 0.00000 100% - 0s H 0 0 7.0000000 0.00000 100% - 0s 0 0 0.48000 0 26 7.00000 0.48000 93.1% - 0s 0 0 1.00301 0 30 7.00000 1.00301 85.7% - 0s 0 0 1.00474 0 31 7.00000 1.00474 85.6% - 0s 0 0 1.00474 0 31 7.00000 1.00474 85.6% - 0s 0 2 1.00727 0 31 7.00000 1.00727 85.6% - 0s * 6 4 6 6.0000000 2.69444 55.1% 15.2 0s Cutting planes: Gomory: 3 Zero half: 1 Mod-K: 1 Explored 21 nodes (397 simplex iterations) in 0.03 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.000000000000e+00, best bound 6.000000000000e+00, gap 0.0%